tests: chip: add test cases for gpiod_chip_find_line()

Test two use cases: correct lookup and a search for a non-existent
line.

Signed-off-by: Bartosz Golaszewski <bartekgola@gmail.com>

diff --git a/tests/tests-chip.c b/tests/tests-chip.c
index 7861d1ec84813db4bb14909c0fb3e999a7431c66..0f8d4178c03cb4e33258b958a33db1b697a28f27 100644 (file)
--- a/tests/tests-chip.c
+++ b/tests/tests-chip.c
@@ -194,3 +194,36 @@ static void chip_num_lines(void)
 TEST_DEFINE(chip_num_lines,
            "gpiod_chip_num_lines()",
            0, { 1, 4, 8, 16, 32 });
+
+static void chip_find_line_good(void)
+{
+       TEST_CLEANUP(test_close_chip) struct gpiod_chip *chip = NULL;
+       struct gpiod_line *line;
+
+       chip = gpiod_chip_open(test_chip_path(1));
+       TEST_ASSERT_NOT_NULL(chip);
+
+       line = gpiod_chip_find_line(chip, "gpio-mockup-B-4");
+       TEST_ASSERT_NOT_NULL(line);
+       TEST_ASSERT_EQ(gpiod_line_offset(line), 4);
+       TEST_ASSERT_STR_EQ(gpiod_line_name(line), "gpio-mockup-B-4");
+}
+TEST_DEFINE(chip_find_line_good,
+           "gpiod_chip_find_line() - good",
+           TEST_FLAG_NAMED_LINES, { 8, 8, 8 });
+
+static void chip_find_line_not_found(void)
+{
+       TEST_CLEANUP(test_close_chip) struct gpiod_chip *chip = NULL;
+       struct gpiod_line *line;
+
+       chip = gpiod_chip_open(test_chip_path(1));
+       TEST_ASSERT_NOT_NULL(chip);
+
+       line = gpiod_chip_find_line(chip, "nonexistent");
+       TEST_ASSERT_NULL(line);
+       TEST_ASSERT_ERRNO_IS(ENOENT);
+}
+TEST_DEFINE(chip_find_line_not_found,
+           "gpiod_chip_find_line() - not found",
+           TEST_FLAG_NAMED_LINES, { 8, 8, 8 });